Sr20det help! Turns over but won't start

[Undecideabledecision]

Okay I have a 98 type x blacktop sr20det in my s13

My friend and I were trying to wire in a launch control which splices into the ecu harness.. Anyways he cut the two wrong wires at first and then he crimped them back together. Further on we cut the right wires but it's potential he accidentally wired two of them to the wrong ones because it was not working at first. So we fixed the wiring and got it in properly, the launch control device was turning in and working but car just kept cranking and wouldn't start. So we disconnected it and wired the ecu harness back to stock just the way it was, and car still just cranks and won start. Fuel pump is turning on, but getting no spark. Any ideas? Is. It possible we fried the ecu?